七年级英语上册Unit3IsthisyourpencilSectionB3a-SelfCheck课后习题新版人教新目标版

Unit 3 Is this your pencilSection B (3a)-Self Check知能演练提升Ⅰ.根据句意及汉语提示完成单词1.Is that a s　　　　　　 of keys?